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Checking if a key exists in a JS object
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Use the in operator:
testArray = 'key1' in obj;
Sidenote: What you got there, is actually no jQuery object, but just a plain JavaScript Object.
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event.preventDefault() function not working in IE
...ameter. It will always contain the preventDefault() method.
Try out this fiddle to see the difference in event binding.
http://jsfiddle.net/pFqrY/8/
// preventDefault always works
$("mootoolsbutton").addEvent('click', function(event) {
alert(typeof(event.preventDefault));
});
// preventDefault m...
Adding List.add() another list
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
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How to get the command line args passed to a running process on unix/linux systems?
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There are several options:
ps -fp <pid>
cat /proc/<pid>/cmdline | sed -e "s/\x00/ /g"; echo
There is more info in /proc/<pid> on Linux, just have a look.
On other Unixes things might be different. The ps command will work everywhere, the /proc...
What's the difference between window.location and document.location in JavaScript?
...they are same, then describes the differences in lighter text. They are decidedly not same.
– danorton
Feb 7 '12 at 1:47
35
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Automatically enter SSH password with script
...r script so you can share your script with others worry-free, and later decide to enable encryption on your ~/.ssh folder without also encrypting your script.
– Alexander Taylor
Oct 30 '14 at 0:33
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Cannot use a CONTAINS or FREETEXT predicate on table or indexed view because it is not full-text ind
...escription(Description)
key index PK_ProductDescription_ProductDescriptionID
Before you create the index, make sure:
- you don't already have full-text search index on the table as only one full-text search index allowed on a table
- a unique index exists on the table. The index must be...
“FOUNDATION_EXPORT” vs “extern”
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Relative frequencies / proportions with dplyr
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This seems an invalid answer on dplyr 0.7.1. It does the frequency calculation overall on "gear", instead of within each level of "am".
– Edwin
Jul 19 '17 at 14:16
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Difference between GIT and CVS
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The main difference is that (as it was already said in other responses) CVS is (old) centralized version control system, while Git is distributed.
But even if you use version control for single developer, on single machine (single account), there are a few differences betw...